Question

Among the various weed species that have historically posed serious problems to agricultural land, one particular ornamental-turned-invasive shrub holds the distinction of being the very first weed in the world to be successfully brought under control using biological methods rather than chemical herbicides. Which weed was this?

A Parthenium hysterophorus
B Lantana camara
C Eichhornia crassipes
D Cyperus rotundus
E Chenopodium album
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